Magnetic tunnel junctions and nano-sized domain-wall conduits have been fabricated on the flexible substrate Kapton. Despite the delicate nature of tunneling barriers and zig-zag shaped nanowires, the devices show an outstanding integrity and robustness upon mechanical bending. High values of bending angle (r = 5 mm) have been achieved without degradation of the device performance, reaching room-temperature tunneling magnetoresistance ratios of 12% in bended Co/Al2O3/NiFe junctions. In addition, a suitable route to pattern high-quality nanostructures directly on the polyimide surface is established. These results demonstrate that Kapton is a promising platform for low-cost, flexible spintronic applications involving tunnel junction elements and nanostructurization.
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Research Article| February 12 2014
Flexible spintronic devices on Kapton
Luis E. Hueso;
Amilcar Bedoya-Pinto, Marco Donolato, Marco Gobbi, Luis E. Hueso, Paolo Vavassori; Flexible spintronic devices on Kapton. Appl. Phys. Lett. 10 February 2014; 104 (6): 062412. https://doi.org/10.1063/1.4865201
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